DIV Calculator 1.2.0.12

the author of this app says:

DIV Calculator uses the Reverse Polish Notation (RPN) for performing mathematical operations. This program allows the user to convert values between all currencies, including the Euro.

It is also a scientific calculator and it supports most of the common operations such as square root, square and power. Binary calculus is included as well and can do conversions between decimals, hexadecimals, octals and binaries.

Some of the other conversions it can do are:
• Temperatures (both Celsius and Fahrenheit)
• Distances
• Weights
• Speeds
• Areas
• Volumes

To top it off, mathematical operations can be performed on these values. For example, you can multiply a distance with an area to get a volume.